Examples with Cryptomator org.cryptomator.ui.Cryptomator used on opensource projects

Example 1 with Cryptomator

use of org.cryptomator.ui.Cryptomator in project cryptomator by cryptomator.

the class SingleInstanceManager method getRemoteInstance.

/**
	 * Checks if there is a valid port at
	 * {@link Preferences#userNodeForPackage(Class)} for {@link Cryptomator} under the
	 * given applicationKey, tries to connect to the port at the loopback
	 * address and checks if the port identifies with the applicationKey.
	 * 
	 * @param applicationKey
	 *            key used to load the port and check the identity of the
	 *            connection.
	 * @return
	 */
public static Optional<RemoteInstance> getRemoteInstance(String applicationKey) {
    Optional<Integer> port = getSavedPort(applicationKey);
    if (!port.isPresent()) {
        return Optional.empty();
    }
    SocketChannel channel = null;
    boolean close = true;
    try {
        channel = SocketChannel.open();
        channel.configureBlocking(false);
        LOG.debug("connecting to instance {}", port.get());
        channel.connect(new InetSocketAddress(InetAddress.getLoopbackAddress(), port.get()));
        SocketChannel fChannel = channel;
        if (!TimeoutTask.attempt(t -> fChannel.finishConnect(), 1000, 10)) {
            return Optional.empty();
        }
        LOG.debug("connected to instance {}", port.get());
        final byte[] bytes = applicationKey.getBytes(StandardCharsets.UTF_8);
        ByteBuffer buf = ByteBuffer.allocate(bytes.length);
        tryFill(channel, buf, 1000);
        if (buf.hasRemaining()) {
            return Optional.empty();
        }
        buf.flip();
        for (int i = 0; i < bytes.length; i++) {
            if (buf.get() != bytes[i]) {
                return Optional.empty();
            }
        }
        close = false;
        return Optional.of(new RemoteInstance(channel));
    } catch (Exception e) {
        return Optional.empty();
    } finally {
        if (close) {
            IOUtils.closeQuietly(channel);
        }
    }
}

Example 2 with Cryptomator

use of org.cryptomator.ui.Cryptomator in project cryptomator by cryptomator.

the class SingleInstanceManager method startLocalInstance.

/**
	 * Creates a server socket on a free port and saves the port in
	 * {@link Preferences#userNodeForPackage(Class)} for {@link Cryptomator} under the
	 * given applicationKey.
	 * 
	 * @param applicationKey
	 *            key used to save the port and identify upon connection.
	 * @param exec
	 *            the task which is submitted is interruptable.
	 * @return
	 * @throws IOException
	 */
public static LocalInstance startLocalInstance(String applicationKey, ExecutorService exec) throws IOException {
    final ServerSocketChannel channel = ServerSocketChannel.open();
    boolean success = false;
    try {
        channel.configureBlocking(false);
        channel.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
        final int port = ((InetSocketAddress) channel.getLocalAddress()).getPort();
        Preferences.userNodeForPackage(Cryptomator.class).putInt(applicationKey, port);
        LOG.debug("InstanceManager bound to port {}", port);
        Selector selector = Selector.open();
        channel.register(selector, SelectionKey.OP_ACCEPT);
        LocalInstance instance = new LocalInstance(applicationKey, channel, selector, port);
        exec.submit(instance::selectionLoop);
        success = true;
        return instance;
    } finally {
        if (!success) {
            channel.close();
        }
    }
}